Year	% of total merchandise exports
1960	11.191216350287718
1961	9.949409780775717
1962	8.285862247540136
1963	5.734144222415291
1964	5.736074270557029
1965	5.77825929938606
1966	4.410817772054089
1967	3.331367924528302
1968	2.390532544378698
1969	1.9042851857494179
1970	1.230367612444901
1971	1.1846767050487157
1972	1.8382896878236423
1973	3.7027570261760636
1974	3.5597985144147937
1975	3.853886833257303
1976	2.115312960033229
1977	1.4397311503339556
1978	2.2287435859590023
1979	3.46634083621829
1980	3.701279210121279
1981	3.169972927188386
1982	2.763414838422442
1983	2.5899914305274296
1984	1.5846401762367246
1985	3.6808674925657767
1986	2.212393574338782
1987	0.4292264273391141
1988	0.5144784795677979
1989	3.0473605735830267
1990	3.1975449707611467
1991	4.40622321909148
1992	5.274382116191049
1993	6.7665257533293985
1994	6.489179340455535
1995	7.431358785501141
1996	7.129871304936522
1997	5.289216552800347
1998	7.099497263247661
1999	16.325795271198714
2000	10.936136406702543
2001	8.595264576983135
2002	8.885400188952
2003	9.955896752589684
2004	9.045116527284474
2005	8.09446469656958
2006	6.489155825451628
2007	9.392071410645364
2008	8.341346455140387
2009	7.607491945715898
2010	10.961013114388678
2011	12.477058157271074
2012	13.794443796591931
2013	10.84867382793553
2014	16.14852932946443
2015	15.493445269887552
2016	18.158227249841286
2017	19.509273621924756
2018	23.372628924282655
2019	23.34427415819183
2020	22.787964920741477